7n-9+4n=13 - solution

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Solution for 7n-9+4n=13 equation:

n in (-oo:+oo)

7*n+4*n-9 = 13 // - 13

7*n+4*n-13-9 = 0

11*n-22 = 0 // + 22

11*n = 22 // : 11

n = 22/11

n = 2

n = 2

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